Certified Quantum Random Numbers from Untrusted Light

Drahi, D.; Walk, N.; Hoban, Matty J.; Fedorov, A. K.; Shakhovoy, R.; Feimov, A.; Kurochkin, Y.; Kolthammer, W. S.; Nunn, J.; Barrett, J. and Walmsley, I. A.. 2020. Certified Quantum Random Numbers from Untrusted Light. Physical Review X, 10(4), 041048. ISSN 2160-3308 [Article]

[img] Text
1905.09665.pdf - Accepted Version
Permissions: Administrator Access Only

Download (1MB)
[img]
Preview
Text
PhysRevX.10.041048.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview

Abstract or Description

A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate numbers whose randomness is asserted based upon the underlying physical processes. We formally introduce, design and experimentally demonstrate an ultrafast optical quantum random number generator that uses a totally untrusted photonic source. While considering completely general quantum attacks, we certify and generate in real-time random numbers at a rate of 8.05 Gb/s with a rigorous security parameter of 10^(−10). Our security proof is entirely composable, thereby allowing the generated randomness to be utilised for arbitrary applications in cryptography and beyond. To our knowledge, this represents the fastest composably secure source of quantum random numbers ever reported.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1103/PhysRevX.10.041048

Keywords:

Optics, Quantum Information

Departments, Centres and Research Units:

Computing

Dates:

DateEvent
21 September 2020Accepted
9 December 2020Published Online
October 2020Published

Item ID:

29476

Date Deposited:

27 Nov 2020 09:51

Last Modified:

20 Mar 2021 02:23

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

https://research.gold.ac.uk/id/eprint/29476

View statistics for this item...

Edit Record Edit Record (login required)